Wrench.



F. ANDRUSZKIEWIGZ.

WRENCH.

APPLICATION FILED MAR.30, 1914.

1,1 15,372, 1 Patented 0ct.27,1914.

TnE HORRIs PETERS 60.. PNOTO-LITHO.. WASHINGTON. r). c.

A still further obj rarnnr curios,

, FRANK ANDRUSZKIEWIGZ, or EASTHAMPTON, MASSACHUSETTS.

wnnnorr.

Specification of Letters Patent.

Patented Oct. 2?, 1914.

Application filed. March 30, 1914., Serial No. 828,293.

To all whom it may concern Be it known that I, FRANK Annnuszmn wroz, a citizen of the United States, residing at Easthampton, in the county of Hampshire and State of Massachusetts, have-invented certain new and useful Improvements in renches; and I do declare the following to be a full, clear, and exact de scr'iption of the invention, such as willenable others skilled in the art to which it appertains to make and use the same.

.This invention relates to new and useful improvements in wrenches and more particularly to the character of wrench in which relatively fixed and movable jaws are provided, thesame having a pivoted rack catch, and the primary object of the invention is to provide a device of this character in which delicate adjustments may be made.

Still another object of the invention resides in providing a wrench which is so constructed as to permit the movable jaw to be automatically retained in any position. to which the same may be adjusted.

'ect resides in providing an improved means for arranging a spring in connection 'with the movable and pivoted pawl carried thereon, so that the latter may be normally held. in position for engagement with the rack on the shank.

A still further object resides in providing a device which is simple and durable in construction, inexpensive to manufacture, and one which will be very efficient and useful in operation.

With these and other objects in view, my invention consists in the novel features of construction, combination and arrangement of parts as will be hereinafter; referred to and more particularly pointed out in the specification and claim.

In the accompanyingdrawing forming a part of this application: Figure 1 is a side elevation of a'device constructed in accordance with my invention; Fig. 2 is a front elevation thereof; Fig. 3 is a side elevation thereof partly in section; and Fig. 4 is a similar view as seen on line 4ii of Fig. 3.

In describing the invention, I shall refer to the drawing in which similar reference characters designate corresponding parts throughout the several views, and in which 1 indicates a shank, the upper portion of which is designed to provide a fixed jaw 52 and the one side edge of said shank is provided with a plurality of teeth indicated as 3, whereby a rack is formed on this edge of said shank; Slidably mounted on the shank is a housings, one portion of which is projected beyond the adjacent side edge of the shank to provide an additional jaw 5, the

latter being substantially a movable jaw with respect to the jaw 2. That portion of the housing which is designed to form the jaw 5 is slotted fromits lower edge as indicated at 6 and pivotally held in this slotted portion of the jaw is the upper end of a dog 7. This dog hasthe upper portion thereof reduced in thickness to provide a tongue 8 and dog which is received in the slotted portion 6 of the jaw. teeth 9 which are designed for engagement with the rack teeth 3 and the pivot of this dog is a pin or stud 10 which is preferably projected Slightly beyond the faces of the jaw for a purpose to be hereinafter and more particularly set forth.

It might be here stated that the teeth of the rack 3 are preferably inclined so that the pawl or dog 7 may readily ride thereover in the raising of the movable jaw upwardly with respect to the fixed aw and l have provided an improved springmeans in connection with this dog for the normal retention of the latter in engagement with the teeth. To this end, a channel 11 is prodded to extend transversely through the body of the dog 7 adjacent its engaging end and disposed therethrough is a wire spring member 12. This spring member is bent along the side faces of the dog and has the arms thereof extended upwardly along the side facesof the jaw 5. Keepers 13 are pro-;

vicled on the side faces of thejaw through which the arms of this bent spring member are guided and the free ends of the arms of the spring member are bent inwardly as shown at 14: to extend in an additional channel 15 formed in the jaw 5. It is obvious from this construction that the spring member will normally tend to retain the jaw 5 in its effective position and said movable jaw may be readily disposed toward the fixed jaw and held in any adjusted position. It will also be seen, however, that in view of this construction, this movable jaw may not be casually moved in a direction from the fixed jaw, and in order to accomplish the latter result, the jaw 5 must be grasped and thrown outwardly to disengage the teeth thereof from the teeth 3 of the it is the latter portion of the The dog 8 is provided with rack on the shank. I have provided a means in connection with this spring held dog to limit the outward swinging movement of the latter and thus protect the spring member 12 from undue wear. To this end, the

bent arms of the spring which are disposedalong the side faces of the jaw and the dog are arranged in a plane inwardly and above the 'pintle or pivot 10 of said dog. "As

stated above, the ends of this pivot pin project slightly beyond the side faces of the j aw in which the same is disposed, and thus it will be seen that the arms of the spring .may only be swung outwardly to such a degree as will enable the teeth thereof to entirely free themselves from their engagement with the teeth of the rack 3. Undue wear on the spring will thus be prevented, and the life of said spring will be greatly enhanced. It might be here also stated that the shank 1 is provided with a stud 16 at a point below the rack, which stud has its ends projecting beyond the side faces of this shank whereby to limit the downward or outward movement of the housing and movable jaw thereon. The extreme outer end of the shank l is reduced and tapered as shown at 17 to form a screw driver and thus when this device is not being used as a wrench, the same may be efficiently used for the purpose of applying screws in obects.

From the foregoing, itwill be seen that I have provided a simple,inexpensive and efiicient means for carrying out the objects of'the invention, and while I have particularly described the elements best adapted to perform the functions set forth, it is obvious that various changes in form, proportion and in the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the principles of the invention.

Having thus described my invention,'what I claim is I A wrench of the class described compris ing a shank, a fixed jaw formed at one end thereof, a relatively movable jaw mounted with rack teeth along one side edge thereof, a dog pivotally carried on the movable jaw and designed for engagement with said rack teeth, the pivot pin of said dog projecting slightly beyond the side faces of said movable jaw, a spring member disposed completely through said dog and bent to peralong the side faces of the dog and said movable jaw, and means for securing the ends of the arms of said spring to said movable jaw whereby to normally dispose said projecting portions of said pivot pin being arranged just outside of the plane of the arms of said spring and intermediate the ends thereof for engagement with said arms disengaged position whereby to limit the outward swinging movement of the latter. In testimony whereof I havehe'reunto set my hand in presence of two subscribing witnesses. V

FRANK ANDRUSZKIEVVICZ. v Witnesses:

CHAS. H. JoHNsoN, EARL V. GUY.

Copies o1! this patent may be obtained ferffiv e cents each, by addressing the Commissioner of Patents,

Washington, D. C.

on said shank, said shankbeing provided mit the arms thereof to project upwardly dog in its effective engaging position, the

when the dog'is moved to its ineffective and v 

